Did you happen to see the Formlabs Form 1 printer? They were at Maker Faire too. They're running a Kickstarter right now, and from the photos and video on there the parts that machine produces look far better than most anything else I've seen. I watched the video of the Tinkerines Ditto on IndieGoGo and the parts didn't look anywhere near as finely-detailed.
I'm quite interested in learning more about the Form 1 and it would be great if someone had a first-hand experience from maker Faire (I'm in Seattle and couldn't attend).
Logitech has a system that I purchased for my home: Logitech Alert.
You didn't specify exactly what you meant by "cheap," but you can get a full six-camera system (the max # of cameras it will support) for around $1,000.
720p cameras, motion detection, video stored on SD cards in each camera and copied to your PC, remote access, email alerts... It's got pretty much everything.
The best part is how ridiculously easy it is to set up. The system uses your home's electrical wiring to communicate between the cameras and the base system, so you literally just plug everything in and you're up and running. I was shocked at how easy it was to set up.
Here's some sample video from the camera on my front porch (which, by the way, I exported from their software to YouTube in just one or two clicks).
% "Every morning, I get up and look through the 'Forbes' list of the richest people in America. If I'm not there, I go to work" -- Robert Orben